Radiator cap



June 19, 1928.

C. H. BEHNKE RADIATOR CAP Filed Oct. 30, 1924 2 IN V EN TOR.

ATTORNEYS.

Patented June 19, 1928.

CORD H. BEHNKE, OE MASPETH, NEW YORK.

RADIATOR CAP.

- Application filed. 0ctober30, 192. Serial in. 746,731. 5

This invention relates to caps adapted to be attached to the neck of the radiator of an internal combustion engine, and is particularly useful in connection with the type of cap which has a body portion adapted to be permanently secured to the radiator neck, and a closing member, usually pivoted upon said body member, said closure member being adapted to support a motor heat indicator of a well-knowntype.

Radiator necks, to which caps of the style above mentioned are applied, are of various sizes and kinds; and it has been found in practice to be a diflicult matter to insure the making of an absolutely water-tight connectionbetween the radiator neck and the cap. such a water-tight connection could be obtained by providing a lgasket, of rubber or some other yielding material, between the radiator neck and a shoulder within the cap. Experience has shown, however, that while such an arrangement may be satisfactory with some kinds of radiator necks when the caps are carefully installed thereon, it is often unsatisfactory, owing to the fact that the gasket may be squeezed out of its proper position during the installing operation, which results in a leaky instead of a tight joint.

The general object of. the invention is to provide a new and improved means, adapted to cooperate with-a radiator cap of the kind above mentioned, for insuring a non-leaking connection between'the radiator neck and the cap. In attaining this object, the invention comprises certain means, adapted to cooperate with a gasket interposed between the cap and a radiator neck, for limiting the deformation of the gasket during the installing operation, thereby ensuring that 'the gasket will always perform its function in a reliable and satisfactory manner.

The invention will be understood from the following description, taken in connection with the accompanying drawing, in which Figures 1, 2 and 3 are elevations, partly in section, of a radiator cap having the invention embodied therein. Figure 1 shows the manner in which the invention cooperates with a well-known type of radiator neck having a thin wall and an 111- turned flange; Figure 2 is applied to a radiator neck having a thin wall which pre sents a comparatively sharp edge; and Fig- At first thought, it would seem that ure 3 shows the invention applied to a thickwalled radiator neck. I

In allof the figures, the cap is shown as comprising a body portion 5, provided with oppositely extending arms 6, terminating in balls or symbol carriers 7; to which body portion ispivotally attached 'a cover 9 between which and the body portion is interhaving a shoulder 12, and a threaded portion 13 adapted to cooperate with the threads on the outside of a radiator neck 1 1." Set screws 15 are shown extending throughthe lower POI'lJlOIlOflIlle body member 5 and into cooperative relationship with the threads on the radiator neck lh for-the purpose of locking the cap in any position towhich it may be adjusted on the radiator neck.

In order to provide a water-tight joint between the radiator neck 14: and the cap,

a gasket 16, of rubber or some other suitable yielding material, is arranged between the shoulder 12 and the top of the radiator neck 14:. Cooperating with this gasket is a sleeve 18, preferably of thin metal, such as brass, which is in-turned at one end as shown at 19, and at the other end is provided with a flange 20. This sleeve 18 is preferably of such a size that it will engage the wall of the opening through the body member 5 above the shoulder 12, and will also engage the inside of the gasket 16, with the flange 20 of the sleeve in engagement with the outside of said. gasket. In assembling the cap, the gasket 16 is first inserted in place adjacent the shoulder 12 and the sleeve 18 is then forced into the position just described.

The manner in which the gasket 16 and the sleeve 18 serve to make a water-tight joint between the cap and the radiator neck will be apparent from the drawing. VJith' each form of radiator neck shown, the sleeve' 18 effectively limits the internal deforma-' tion of the gasket 16 when the cap is screwed tightly on to the radiator neck. With the types of radiator necks shown in'Figure-s 1 and 3, the top of the neck may engage both the gasket 16 and the flanged edge 20 of the sleeve 18; and with a neck of the type shown each case, however, the gasket 16 is put under pressure between the upper end of the neck 14 and the shoulder 12 in thebody por-' tion of the cap, and the gasket is properly retained in position to seal the opening-between these parts. Any; tendency forthe gasket to proper position during the instalhnggopera-r be squeezed inwardly .out of its tion, is effectively resisted by the sleeve 18.

Even if the cap is screwed"down exceedingly hard onto the radiator neck, and is then unscrewedsoniewhat inorder to --bringthe-'arms 6 to thedesired position,the-g'asket 1'6 will not be forced out of its proper position, but will continue to perform its function-properly.

vi hat I claim is: v

1. A capudapted to be attached to the neck of theradiator-ofan internal co1nbi'1s tion engine, said 'cap" being provided with a shouldered opening for receiving the radiator "neck, a gasket coop'eratin'g" with the shoulder in; said opening, and an insert sleeve having a flangeddge engaging the margin of the bottom of thegasket' and a body extending inside said gasket'and held in place by the basket, forliniitingtheinternal deformation of the latter under pressure.

2. The combination with a radiator neck of radiator cap, threaded thereomsaid cap.

having-.ashotdder overlying, the upper rim otthe neck, a gasket seated against said shoulder to bear against the upper rim of the neck for sealing"t'li'ejoint between the cap.

and the neck, an insert, sleeve lining the gasket and holding 1t in place, said sleeve comprising aaflan'ge extending beneath the inner margin of-the gasket and resting upon aportion 'of theupper rim of the: neekiland a-n-- upstanding body portion embraced :and gripped -bythe gasket.

3. A eapadapt-ed to-be attached tonfihe neekof a radiator of antinternal combustion engine, said cap being; providedi. W'ltlli? a shouldered opening, for receiving the radiator-neck, a gasket seated against"theishbuliler in said opening, and a thin .rnetal sleeve'gi-nturned at one end andihaving a flangeratt the other end-construoteduandi arranged to be; forced :into the gasket:- to" p'ositienuthe fian'g ededge ofthe sleevezihuerigagemni; with the bottom ofi' said gasket,i.andiito-:be gripped and held in place .byithe g'asketa In test imon ywhereof I z have s afiixed; my signature tothis speeifi'catiionai .7

- CORDISII-.1B"EHNKEF. 

